#include <stdlib.h>
#include <stdio.h>


int main()
{
	struct node *tree1,*tree2,*tree3;
	tree1 = mk (mk(mk(0,0,'3'),0,'2'),0,'1');
	tree2 = mk (0,mk(0,mk(0,0,'6'),'5'),'4');
	tree3 = mk(mk(tree1,tree2,'8'),0,'7');
}
